App Store Description
You take water care seriously, and that kind of steady service deserves tools that keep up. Thank you for using LSI Water Service Log to calculate LSI, save pool and spa readings, and keep clear records for every stop.
View LSI Water Service Logbook/Plan on the App Store
LSI Water Service Log is a practical pool service app for anyone who checks water chemistry, tracks site history, and needs fast records without a messy paper trail. It brings a Langelier Saturation Index calculator, pool and spa water balance log, site records, quick review tools, and export options into one focused app.
Built for real service days:
– Calculate LSI from TDS, temperature, calcium hardness, total alkalinity, and measured pH.
– See water balance feedback for corrosive, balanced, or scale-forming conditions.
– Save readings with the site name, date, notes, and calculated result.
– Keep pool chemistry records organized by property.
– Use Fahrenheit or Celsius for water temperature.
– Start a fresh reading quickly when the next stop begins.
– Recalculate after retesting or adjusting water.
– Keep recent inputs ready for faster entry.
Keep better records without slowing down:
– Browse saved pool and spa readings in one clean records list.
– Search by site, date, notes, or reading details.
– Sort records so recent visits or older history are easy to review.
– Duplicate a past record to speed up repeat service.
– Share a saved reading when a customer, supervisor, or teammate needs it.
– Add notes for treatment steps, follow-up work, or service context.
– Delete records with confirmation when cleanup is needed.
– Keep reading history in one place instead of scattered screenshots and notes.
– Review a customer’s last visit before making the next adjustment.
– Carry the same workflow across iPhone and iPad.
Review trends and site history:
– Check site-based stats for saved readings.
– Compare minimum, maximum, and average chemistry values.
– Spot changes in pH, calcium hardness, alkalinity, TDS, temperature, and LSI.
– Use spreadsheet review when you want a wider look at saved data.
– Sort spreadsheet columns to focus on the number that matters.
– Review larger record sets without digging through separate notes.
Use it for common pool and spa work:
– Weekly residential pool service.
– Commercial pool maintenance.
– Spa startup and balancing.
– Water chemistry follow-up after chemical adjustment.
– Before and after treatment checks.
– Route history for repeat customers.
– Service documentation for teams.
– Personal records for pool owners who want a cleaner log.
Export and backup tools help once your record history starts to matter:
– Export saved readings for spreadsheet review.
– Create records backups for your own files.
– Create a full backup when you want extra protection.
– Import a backup to add saved data back into the app.
– Share files through the standard iPhone and iPad share sheet.
Quick Calc is there when you only need an answer:
– Run a fast local LSI check without creating a saved record.
– Reuse recent values when testing similar water.
– Share or print a quick result when needed.
– Reset inputs and move on to the next reading.
LSI Water Service Log is made for pool pros, spa techs, maintenance teams, service managers, and detail-focused pool owners. It is not trying to be a giant business suite. It is a focused water chemistry log that helps you calculate, save, review, and share the information you already work hard to collect.
If accurate water balance matters to your day, this app gives you a dependable place to keep it. Calculate LSI, save clean service records, review site history, watch trends, and export your pool and spa readings when the job calls for it.
Monthly Pro is a 1-month auto-renewable subscription.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
If your work depends on consistent pool water chemistry records, LSI Calc DB gives you a straightforward way to calculate, log, review, and export LSI data in one place.
App Store Screenshots
Latest App Store Release Notes
You keep the water work moving, and good records make that work easier to trust later. Thank you for using LSI Water Service Log and for putting it to work on real pool and spa service days.
This update focuses on a cleaner app flow, stronger Pro access handling, better settings, clearer help, and a More screen that keeps important tools easier to reach.
Navigation is now simpler:
– Quick Calc now has its own fourth tab for faster access.
– Spreadsheet review moved into More where it fits with the rest of the review tools.
– More now brings Pro, Spreadsheet, Import and Export, Settings, Help, and About together.
– The More screen has a cleaner pool-style look with simple rows and clear labels.
– Settings and About are now easy to find from More.
Pro access is clearer and easier to act on:
– The Pro screen is more compact at the top.
– Purchase options are available directly from the Pro view.
– Restore purchase access remains available.
– Locked features now guide users to the correct Pro screen.
– Pro status copy is easier to understand.
– Purchase messages use clearer App Store wording.
Purchase access is also more dependable:
– The app now checks current App Store purchase status when it launches.
– Local cached purchase state is treated only as a temporary helper.
– Cached purchase access is cleared when verification is not available.
– Unverified purchase information no longer keeps features unlocked.
– Pro access updates more directly after purchase, restore, or entitlement changes.
Settings gained useful everyday controls:
– Added an Appearance setting.
– Choose Follow System to use the device appearance.
– Choose Light when you prefer a bright app look.
– Choose Dark when you prefer a darker app look.
– Keep default units for new records and Quick Calc.
– Clear recent calculator inputs without affecting saved records.
– Check the installed app version from Settings.
– Use the new manual Check for Updates button.
– Open the App Store from the update result when a newer version is available.
About and Help are more user-friendly:
– About now includes clear AS IS and no warranty language.
– Help text now focuses on what users do in the app.
– Cleaned up wording so screens read more naturally.
– Calculator notes explain the result in plain language.
– Import and export wording now talks about backups and spreadsheet files.
– Quick Calc copy now explains local use without technical storage details.
– Support, privacy, and terms links remain grouped in Settings and About.
Import, export, and sharing text is cleaner:
– Export Spreadsheet File now uses clearer wording.
– Records Backup and Full Backup labels are easier to understand.
– Import Backup now matches the backup language used elsewhere.
– Export status messages are easier to read.
– Import success messages now refer to saved items from backup.
– Backup error messages are less technical.
Record and calculator wording also got polish:
– The help flow now starts with Add Site, Records, and More.
– Record editing instructions are clearer.
– Quick Calculator guidance now matches the current actions menu.
– Formula help keeps the useful calculation details without extra clutter.
– Local calculation text now feels more natural.
This version also tightens the finished app experience across the screens users see most. The result is a cleaner app for pool and spa water balance tracking, faster everyday navigation, more reliable Pro access, clearer settings, and better wording throughout.
Thanks again for using LSI Water Service Log. This update is meant to make every reading, record, backup, and review step feel more direct while keeping the app focused on practical pool and spa service work.
App Store Information
- App Store category: Utilities
- Genres: Utilities, Business
- Availability: Free
- Current version: 9.3
- Requires: iOS 17.6 or later
- Content rating: 4+
- Last updated: 2026-07-17
Developed by Verosocial. App details can change; verify the current App Store listing before publication.